Add error checking for strdup.
Add error checking for strdup.


git-svn-id: b1dee0d48e635e16c3b356ce77271b225d4db9f7@344 7dcaeef0-15fb-0310-b436-a5af3365683c

miloj/libssh-v0.5,jahrome/libssh,pouete/libssh,Distrotech/libssh,mwgoldsmith/libssh,mwgoldsmith/libssh,miloj/libssh-v0.5,sebadoom/libssh,kedazo/libssh,mwgoldsmith/ssh,Distrotech/libssh,wangshawn/libssh,DouglasHeriot/libssh,kedazo/libssh,jahrome/libssh,taikoo/libssh,jahrome/libssh,jahrome/libssh,nviennot/libssh,jt1/honeypot-libssh,substack/libssh,miloj/libssh-v0.5,rofl0r/libssh,sebadoom/libssh,bigcat26/libssh-mod,nviennot/libssh,substack/libssh,DouglasHeriot/libssh,mwgoldsmith/libssh,mwgoldsmith/ssh,mwgoldsmith/ssh,substack/libssh,mwgoldsmith/libssh,rofl0r/libssh,bigcat26/libssh-mod,jt1/honeypot-libssh,rofl0r/libssh,sebadoom/libssh,elastichosts/libssh,taikoo/libssh,kedazo/libssh,pouete/libssh,kedazo/libssh,mwgoldsmith/ssh,wangshawn/libssh,pouete/libssh,sebadoom/libssh,miloj/libssh-v0.5,robxu9/libssh,DouglasHeriot/libssh,taikoo/libssh,wangshawn/libssh,taikoo/libssh,bigcat26/libssh-mod,nviennot/libssh,Distrotech/libssh,substack/libssh,elastichosts/libssh,rofl0r/libssh,robxu9/libssh,robxu9/libssh,bigcat26/libssh-mod,Distrotech/libssh,pouete/libssh,robxu9/libssh,elastichosts/libssh,wangshawn/libssh,DouglasHeriot/libssh,jt1/honeypot-libssh,nviennot/libssh,jt1/honeypot-libssh